Explosive.



Unitas STATES Patented Jam-w my 10, 1905.

Patent @rrica.

EXPLQSlVE.

SPECIFICATION forming part of Letters Patent No. 779,760, dated. January 10, 1905.

Application filed November 22, 1902. Serial No. 132,424.

explosives, and garticularly those which are produced from lasting-gelatin,- and in the process otmaking same.

In order to produce gelatinous explosives,

only Nobels method of manufacture has hitherto been available, which process consists in dissolving collodion-eotton in nitroglycerin and employing the gelatin so obtained, either as such or in combination with adope,'for explosive purposes.

Theessential feature of this invention consists in the fact that instead of employing collodion-cotton for gelatinizing nitroglycerin a solution of collodial substances-such, for example, as glue, gelatin, or the lil;e-in liquids adapted for that purpose which have a higher boiling-point than water is utilized. For example, a suitable solvent for this purpose is glycerin, which dissolves glue in suiiicient quantity. The solution bf theglue in glycerin is preferably effected with heat and constant agitation. After cooling the glue-gelatin is able to take up and retain as much as a fivefold quantity of nitroglycerin, alsowith etlicient agitation and heating. in this manner a tenacious gelatin having a silkygloss is produced, which in every respect presents the same external reactions as gelatlns manufactured from collodion-cotton and nitroglycerin and which is adapted for use in the same way as the well-known blasting-gelatin and for the manufacture of gelatin-dynanntes and other plastic explosives.

An explosive gelatin consisting of'one part using it is described in Ifimdboolc 0n. jl[odern .Eaplosi'ves, by M. Eissler,London, 1897. (See pages 175 to 177.) If an explosive gelatin is made from ninety-two per cent. nitroglycerin, five per cent. collodion-cotton, and three per cent. glue-gelatin, (one to seven,) a distention of eight hundred cubic centimeters is obtained as compared with six hundred and fifty cubic centimeters with the old blastinggelatin without the addition of glue-gelatin.

By altering the proportion of glue glycerin and nitroglycerin gelatins of greater or less stiffness may be obtained and also gelatins which, with the addition of dopes (mixing powders) of wood-dust or flour and saltpeter, give plastic explosives of every explosive force and manner of action according to the proportion of glue-gelatin, nitroglycerin, and mixing powder.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is r 1. An explosive, containing nitroglycerin and a gelatinous substance, substantially as and for the purpose set forth.

2. An explosive, containing nitroglycerin and a gelatinous substance having a higher boiling-point than water, substantially as and for the purpose set forth.

3. An explosive, containing a gelatinous substance dissolved in a polyatomic alcohol, and nitroglycerin, substantially as and for the purpose set forth.

4. An explosive, containing a gelatinous substance dissolved in a polyatomic alcohol, nitroglycerin and collodion-cotton, substantially as and for the purpose set forth.

5. An explosive, containing a gelatinous substance dissolved in glycerin, and nitroglycerin, substantially as and for the purpose set 

